The Covid-19 pandemic has affected not only the entire world but also the economic indicators and growth rate of Turkey. As a developing economy, Turkey is susceptible to the fluctuations in the value of the United States Dollar (USD), which, in turn, impacts the Turkish Lira (TL) and consequently Turkey's external debt stock.The aim of this study is to reveal whether the USD/TL parity has any moderating effect on Turkey's external debt before and after the Covid-19 pandemic. It is aimed that the research results will be guiding for investors, banks and institutions that direct the economy and to predict the factors that affect the economy during crisis periods.